MFSD8 and ceroid lipofuscinosis, neuronal, 6A: In previous studies, the MFSD8 gene mutations were the most common genetic cause of variant late-infantile neuronal ceroid lipofuscinosis (vLINCL), also termed as ceroid lipofuscinosis neuronal 7 disease (CLN7, OMIM 610951), which had an onset age of 1.5 to 5 years [17].